2 254 517 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
508129771933443512407	21	68.8	2020-03-06 12:17:18

ECM

Digits	B1	Curves
25	50000	91 / 280

Estimated T-Level: 21.6 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Stephen Mohr	33C3953519271EE0	0
Verified (Factored)	1999-03-01	Scott H.	33C3953519271EE0	1347406
Verified (Factored)	2018-04-23	kkmrkkblmbrbk	33C3953519271EE0	406393

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-03-07	Niels_Mache_Nextcloud	EE8629D7E865BAC6	1	905986	5	3
Verified	2020-03-07	marssystems	EE8629D7E865BAC6	1	92988	5	3

History

Date	User	Type	Result
2023-05-13	This -Anonymous-	NF-PM1	B1=800000, B2=40000000, E=12
2020-03-07	marssystems	C-PRP	M2254517/508129771933443512407 : EE8629D7E865BAC6 PRP: Verified PRP without proof (not generated)
2020-03-07	Niels_Mache_Nextcloud	C-PRP	M2254517/508129771933443512407 : EE8629D7E865BAC6 PRP: Verified PRP without proof (not generated)
2020-03-06	Keysarecool	F-ECM	Factor: 508129771933443512407 / (ECM curve 2, B1=50000, B2=5000000, Sigma=2953034744439243)
2019-05-20	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-23	kkmrkkblmbrbk	C-LL	33C3953519271EE0
2017-01-05	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-01-20	Joss	NF-PM1	B1=589050, B2=5890500, E=6
2015-10-28	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-10	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-10	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-03	Joss	NF-PM1	B1=141938
2014-06-03	Joss	NF-PM1	B1=113469
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-05-04	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-16	Oscar Östlin	NF-PM1	B1=85000, B2=1636250, E=6
2010-11-24	Oscar Östlin	NF-PM1	B1=75011
2010-11-14	Joss	NF-PM1	B1=20000
2010-11-06	Joss	NF-PM1	B1=15000
2009-01-11	Sturle Sunde	NF	no factor from 2^60 to 2^61

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